I have showtime 4D 90 with OS 120AX motor.

It fly great. But i have one problem.

I always need to trim ailerons to the left. If i have straight then my plane will always spin to the right. "Make rolls" It will not spin very fast, but you can not fly like that.

What should i check. Should i check angle of motor. Or anything else. I really don't know. I have checked a lot of things. And everything is straight or have the same angle on left and right side.